Abstract
The geometric design of roads is the branch of highway engineering concerned with the positioning of the physical elements of the roadway according to standards and limitations with objectives to optimize efficiency and safety while minimizing cost and environmental damage. The present study aims to explore geometric design and other factors which cause of accidents in Lahore. Data is collected from TEPA (Traffic Engineering and Planning Agency), NESPAK (National Engineering Services Pakistan), CTP (City Traffic Police) and Rescue 1122 over a period of 3 years. Two phase sampling technique has been used. Data is carried out about demographic information, physical characteristics and geometric design of roads. All registered 356 traffic accidents have been used on Ferozpur Road, Multan Road, Canal Bank Road and Grand Trunk in Lahore. Poisson regression and negative binomial regression are discussed in this research. SPSS and R Language are used for analysis. The results show that most of accidents occur at office off timing and fatal due to reckless driving and over speeding. Mostly, cars and tralala hit the bikes and Pedestrians. The Poisson regression model gives good description of number of accidents depends on various explanatory variables. Number of lanes, type of locations and roadway light are statistically significant. Narrow Shoulder width (m), Median Width (m) and Lane width (m) increase accident occurrence. Three lanes and larger road structures increase accidents. Numbers of accident increase when Roadway, type of locations, roadway light and traffic control signals decrease.
Highlights
A vehicle has a clash with another vehicle, animal, animal cart, pedestrian or fixed obstruction such as tree, road light and road signal is called traffic accident
The purpose of this study is to evaluate the relationship between traffic accidents and geometric design of roads & other factors
Data set contains a sample of 356 registered traffic accidents
Summary
A vehicle has a clash with another vehicle, animal, animal cart, pedestrian or fixed obstruction such as tree, road light and road signal is called traffic accident. There are many causes of traffic accidents e.g. slow driving, reckless driving, over speeding, driver sleepiness, personal disease, equipments failure, motor vehicle design, geometric design of road, road environment and driver experience and due to alcohol or drugs usage. The geometric design of roads is most important cause of traffic accident. It is the branch of highway engineering. It concerned with the positioning of the physical elements of the road according to principles and limitations. Geometric design increases efficiency of roads and ensures safety from road accidents. It results in reducing cost and environmental damage. Geometric design has an effect on an access to job, schools, businesses and houses, contain a range of travel modes such as walking, bicycling, transport and vehicles, and decrease the fuel use, productions and environmental ruin
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